Quotation

Traveller.There is a thing which the Italians call Morbidezza ; The meaning of which word, is to Express the Softness, and tender Liveliness of Flesh and Blood, so as the Eye may almost invite the Hand to touch and feel it, as if it were Alive ; and this is the hardest thing to Compass in the whole Art of Painting. And ‘tis in this particular, that Titian, Corregio, and amongst the more Modern, Rubens, and Vandike, do Excel.

AGLIONBY, William, Painting Illustrated in Three Diallogues. Containing some Choice Observations upon the Art. Together with The Lives of the Most Eminent Painters From Cimabue, to the time of Raphael and Michael Angelo. With an Explanation of the Difficult Terms, London, John Gain, 1685.